adjective Etymology: from the fourfold aim of improving the head, heart, hands, and health of or relating to a program set up by the United States Department of Agriculture originally in rural areas to help young people become productive citizens by instructing them in useful skills (as in agriculture, animal husbandry, and carpentry), community service, and personal development • 4-H'er also 4-Her noun

Merriam-Webster's Collegiate Dictionary